WO2016021381A1 - Appareil du type coussin gonflable - Google Patents

Appareil du type coussin gonflable Download PDF

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Publication number
WO2016021381A1
WO2016021381A1 PCT/JP2015/070229 JP2015070229W WO2016021381A1 WO 2016021381 A1 WO2016021381 A1 WO 2016021381A1 JP 2015070229 W JP2015070229 W JP 2015070229W WO 2016021381 A1 WO2016021381 A1 WO 2016021381A1
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WO
WIPO (PCT)
Prior art keywords
bag
vehicle
occupant
center
main bag
Prior art date
Application number
PCT/JP2015/070229
Other languages
English (en)
Japanese (ja)
Inventor
智弘 住谷
夏衣 前西
中島　豊
Original Assignee
オートリブ ディベロップメント エービー
智弘 住谷
夏衣 前西
中島　豊
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by オートリブ ディベロップメント エービー, 智弘 住谷, 夏衣 前西, 中島　豊 filed Critical オートリブ ディベロップメント エービー
Priority to JP2016540137A priority Critical patent/JP6263627B2/ja
Priority to US15/501,126 priority patent/US10358106B2/en
Publication of WO2016021381A1 publication Critical patent/WO2016021381A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/205—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in dashboards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
    • B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
    • B60R21/2165—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member characterised by a tear line for defining a deployment opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/239—Inflatable members characterised by their venting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/0002—Type of accident
    • B60R2021/0004—Frontal collision
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R2021/003—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks characterised by occupant or pedestian
    • B60R2021/0032—Position of passenger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23107—Inflatable members characterised by their shape, construction or spatial configuration the bag being integrated in a multi-bag system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R21/2334—Expansion control features
    • B60R21/2338—Tethers
    • B60R2021/23386—External tether means

Definitions

  • the present invention relates to an airbag device for a passenger seat that restrains a passenger in the passenger seat of the vehicle from the front of the vehicle.
  • the airbag device is a safety device that operates in an emergency such as a vehicle collision, and inflates and deploys with gas pressure to receive and protect an occupant.
  • airbag devices There are various types of airbag devices depending on the installation location and application.
  • a front airbag is installed in the center of the steering wheel in the driver's seat to protect the front seat occupant mainly from front and rear impacts, and an instrument panel and other parts are installed near the passenger seat.
  • a passenger airbag is provided.
  • a curtain airbag that inflates and deploys along the side window is provided near the ceiling of the wall to protect each occupant in the front and rear rows from side collision and subsequent rollover (rollover).
  • the part is provided with a side airbag that is inflated and deployed right next to the passenger.
  • Patent Document 1 The airbag arrangement structure disclosed in Patent Document 1 is also compatible with a three-seat front seat.
  • the third airbag in addition to the first airbag unit that restrains the passenger in the driver's seat and the second airbag unit that restrains the passenger in the passenger seat, the third airbag is used to restrain the passenger in the center seat. The unit expands and expands.
  • the third airbag unit is installed in the vicinity of the sun visor on the ceiling, and is configured to inflate and deploy downward between the passenger at the center seat and the instrument panel.
  • the airbag apparatus is also required to cope with irregular collisions and impacts such as so-called oblique collision in which an impact is applied to the vehicle from an oblique front-rear direction.
  • An occupant in an oblique collision enters the airbag cushion (hereinafter referred to as “cushion”) in front of the seat with an irregular behavior such as an oblique direction.
  • the passenger in the passenger seat is in contact with the third airbag unit existing in front of the vehicle width direction inner side (hereinafter referred to as “vehicle inner side”).
  • vehicle inner side the third airbag unit existing in front of the vehicle width direction inner side
  • the present invention has been made in view of such a problem, and an object of the present invention is to provide an airbag device that can restrain an occupant in a stable posture even in an oblique collision and can suppress an injury value to the occupant.
  • a representative configuration of an airbag apparatus is an airbag apparatus that restrains an occupant of a vehicle, and the airbag apparatus has a bag shape and is a seat vehicle.
  • the passenger in the passenger seat may move diagonally forward inside the vehicle.
  • the head may rotate clockwise around the neck as viewed from above.
  • the rear end portion of the center bag provided on the inner side of the main bag is protruded rearward of the main bag.
  • the head of the occupant moving obliquely forward on the vehicle interior contacts the center bag mainly from the side of the head at the same time as, or just before or after, the front main bag.
  • the occupant's head is restrained in the vicinity between the main bag and the center bag, with the side head in contact with the center bag.
  • the angular velocity of rotation of the occupant's head can be reduced, injury values associated with rotation can be suppressed.
  • the rear end portion of the center bag is inclined so as to gradually protrude rearward from the lower side toward the upper side.
  • the rear end portion of the center bag restrains the occupant's temporal region from the inside of the vehicle as described above at the upper portion, while restraining the shoulder on the occupant's inner side from the front and above at the lower portion. can do.
  • the passenger in the passenger seat is restrained by a seat belt from the shoulder on the outside of the vehicle to the flank on the inside of the vehicle.
  • the shoulder inside the vehicle is not restrained by the seat belt.
  • the occupant may head diagonally forward with a behavior that twists the upper body with the shoulder inside the vehicle in front.
  • the rear end portion of the center bag that is inclined so as to protrude rearward gradually toward the upper side restrains the occupant's shoulder from the front and the upper side. Therefore, according to the present invention, the above-described rotation of the head can be suppressed, and the twist of the upper body of the occupant can be offset, so that the occupant can be preferably restrained.
  • the rear end of the center bag may be inclined in a straight line when viewed from the side of the vehicle. According to the center bag having this configuration, it is possible to restrain the occupant's shoulder from the front and the upper side at the rear end while restraining the occupant's temporal region on the side surface outside the vehicle.
  • the rear end portion of the center bag may be inclined while drawing a curve protruding rearward of the vehicle or recessed forward of the vehicle when viewed from the side of the vehicle. Even with such a configuration, a center bag capable of restraining the passenger's temporal region and shoulders can be realized.
  • the rear end of the main bag may be gradually inclined toward the front of the vehicle as it goes upward.
  • the occupant In the event of a vehicle collision, the occupant often contacts the main bag located in front of the seat.
  • the occupant's head tends to increase the injury value with respect to the load in the sliding direction (the direction in which the face is raised). Therefore, in the above configuration, the load in the direction in which the head slides is suppressed by inclining the rear end portion of the main bag upward toward the front of the vehicle.
  • an airbag device that further suppresses the injury value of the occupant can be realized.
  • the airbag device may further include a slit that separates the main bag and the center bag on the vehicle rear side.
  • a slit that separates the main bag and the center bag on the vehicle rear side.
  • the above main bag and center bag may be integrated below the slit. What is necessary is just to provide a slit in the location which a passenger
  • the airbag device further includes a tether belt that is belt-shaped and is connected to a first connection portion on the vehicle rear side of the center bag and a second connection portion on the upper portion of the main bag, and the tether belt includes the main bag and the center bag. It is good to have the length which is tense when a bag expands and expands and a 1st connection part and a 2nd connection part move to the direction which mutually leaves
  • the center bag is supported by the main bag by the tether belt. Therefore, even when the passenger's head comes into contact with the center bag from the outside of the vehicle, the center bag is prevented from moving to the inside of the vehicle relative to the main bag, and the narrowness of the slit is maintained. It can be suitably guided and restrained.
  • the second connecting portion may be provided in an inner portion in the vehicle width direction at the top of the main bag. According to this configuration, the length of the tether belt is shorter than when the second connection portion is outside the main bag. Thus, by changing the length of the tether belt, it is possible to adjust the reaction force applied to the head of the occupant via the center bag.
  • the second connection part may be provided in front of the vehicle with respect to the first connection part. Even if it is this structure, when a passenger
  • the main bag may contact the windshield of the vehicle and the upper surface of the instrument panel of the vehicle by inflating and deploying. That is, the main bag may be inflated and deployed between the windshield and the instrument panel. According to this configuration, the posture of the main bag can be stabilized even when an occupant enters the vehicle, and the posture of the center bag connected to the main bag by the tether belt is further stabilized.
  • the airbag device further includes a housing that is box-shaped and houses the main bag and the center bag and is provided inside the upper surface portion of the instrument panel of the vehicle.
  • the main bag and the center bag are provided on the upper surface of the instrument panel.
  • the part may be cleaved and expanded.
  • an airbag device that can restrain an occupant in a stable posture even in an oblique collision and can suppress an injury value for the occupant.
  • FIG. 4 is an enlarged view of the cushion and the occupant in FIG. It is the figure which illustrated the process which the cushion of FIG. 3 restrains a passenger
  • FIG. 1 is a diagram illustrating an outline of an airbag apparatus 100 according to an embodiment of the present invention.
  • FIG. 1A is a diagram illustrating a vehicle before the airbag apparatus 100 is operated.
  • the airbag device 100 is embodied for a passenger seat (front row right seat) in a left-hand drive vehicle.
  • the technical idea of the present embodiment is not limited to the airbag device for the passenger seat, and can be appropriately implemented in the airbag device for each seat of the vehicle.
  • the airbag device 100 is installed inside the upper surface portion 106 on the passenger seat 104 side of the instrument panel 102. When the airbag device 100 receives an impact detection signal from a sensor (not shown), the cushion 108 (see FIG.
  • FIG. 1B tears the upper surface portion 106 and expands and deploys rearward of the vehicle.
  • FIG. 1B is a diagram illustrating the vehicle after the airbag apparatus 100 is operated.
  • the cushion 108 of the airbag device 100 restrains the passenger 132 (see FIG. 3A) of the passenger seat 104 from the front of the vehicle.
  • the cushion 108 has a bag shape and receives gas from the inflator 110 (see FIG. 3A) to expand and deploy.
  • the cushion 108 is formed by overlapping or sewing a plurality of base fabrics constituting the surface, spinning using OPW (One-Piece Woven), or the like.
  • OPW One-Piece Woven
  • the cushion 108 of the airbag device 100 includes two parts, a main bag 112 and a center bag 114.
  • the main bag 112 is a large-capacity part that inflates and deploys to the front side of the passenger seat 104.
  • the main bag 112 is inflated and deployed so as to fill a space between the passenger 132 of the passenger seat 104, the instrument panel 102 and the windshield 116. This prevents the passenger 132 from colliding with the instrument panel 102. Further, by preventing the occupant 132 from colliding with the windshield 116, the occupant 132 is also prevented from being released from the vehicle.
  • the center bag 114 is a flat part that is inflated and deployed inside the main bag 112 and has a smaller capacity than the main bag 112.
  • the center bag 114 is inflated and deployed in front of the center console 118 when viewed from the occupant 132 (see FIG. 3A), so that the occupant 132 moves inside the vehicle or collides with the center console 118 during an oblique collision or the like. prevent.
  • the lower portions of the main bag 112 and the center bag 114 are integrated by being connected by a cloth-like tie panel 120.
  • FIG. 2 is a diagram illustrating the cushion 108 in FIG. 1B when inflated and deployed from each direction.
  • FIG. 2A is a perspective view illustrating the cushion 108 of FIG. 1B as viewed from above the outside of the vehicle.
  • a slit 128 is formed between the center bag 114 and the main bag 112. The slit 128 separates the center bag 114 and the main bag 112 on the vehicle rear side. The slit 128 is a part that restrains the head E1 of the occupant 132 (see FIG. 3A).
  • the center bag 114 has an upper portion 142 connected to the main bag 112 by a tether belt 122 so as not to separate from the main bag 112.
  • the tether belt 122 and the tie panel 120 are arranged so as to avoid a position where the head E1 of the occupant 132 can come into contact with each other, and the slit 128 is exposed.
  • vent holes 130 are provided on the side surface of the main bag 112 outside the vehicle.
  • the vent hole 130 is a so-called exhaust hole, and discharges the gas supplied from the inflator 110 (see FIG. 3A) to the outside. Since there is only a side window or the like on the outside of the main bag 112 and no occupant 132 (see FIG. 3A), the vent hole 130 is not provided on the side of the main bag 112 on the outside of the vehicle. It is valid.
  • FIG. 2 (b) is a perspective view illustrating the cushion 108 of FIG. 2 (a) as viewed from above the vehicle interior.
  • the tether belt 122 connects the upper part 142 of the center bag 114 and the upper part 144 of the main bag 112.
  • the tether belt 122 has a belt shape and plays a role of supporting the posture of the center bag 114.
  • the tether belt 122 is formed of the same type of base fabric as the cushion 108, for example, and is connected to the first connection portion 124 on the center bag 114 and the second connection portion 126 on the main bag 112 by sewing. Yes.
  • FIG. 2C is a diagram illustrating the cushion 108 of FIG. 2B as viewed from the outside of the vehicle.
  • the center bag 114 in the present embodiment has a rear end 160 on the vehicle rear side protruding from the main bag 112 toward the rear of the vehicle (left side in FIG. 2C). Inflates and expands. Therefore, the vehicle exterior side surface 162 of the center bag 114 is exposed from the slit 128.
  • the center bag 114 is set so as to mainly restrain the temporal region E1a of the occupant 132 (see FIG. 3A) by the side surface. Since the center bag 114 is supported by the main bag 112 by the tether belt 122, the center bag 114 can function as a reaction force surface that restrains the temporal portion E1a.
  • the rear end portion 160 of the center bag 114 is inclined in a straight line so as to gradually protrude rearward as it goes upward.
  • the rear end portion 160 mainly restrains the left shoulder E3a (FIG. 3B) inside the vehicle of the occupant 132 from the front of the vehicle and supports the upper body of the occupant 132 together with the main bag 112.
  • FIG. 3 is a diagram illustrating a process in which the cushion 108 in FIG. 2C restrains the occupant 132.
  • the left side in the figure is the front of the vehicle.
  • FIG. 3A is a diagram illustrating an undeployed state of the cushion 108.
  • the main bag 112 and the center bag 114 constituting the cushion 108 are both accommodated in a housing 134.
  • the housing 134 has, for example, a box shape whose upper side is open and accommodates the folded cushion 108.
  • An inflator 110 is installed on the bottom surface of the housing 134.
  • the inflator 110 for example, a disk-shaped disk type can be used, but a cylindrical cylinder type may be used.
  • Inflators that are currently popular include a type that is filled with a gas generating agent and burns it to generate gas, a type that is filled with compressed gas and supplies gas without generating heat, or There is a hybrid type using both combustion gas and compressed gas. Any type of inflator 110 can be used.
  • FIG. 3B illustrates the inflated and deployed cushion 108.
  • the cushion 108 is inflated and deployed to the rear of the vehicle by cleaving the upper surface portion 106 of the instrument panel 102 serving as a lid of the housing 134.
  • the main bag 112 and the center bag 114 are connected by, for example, an internal vent hole (not shown), and are inflated and deployed using the common inflator 110.
  • the main bag 112 and the center bag 114 are, for example, bags that are independent from each other, and can be configured to use separate inflators.
  • the occupant 132 illustrated in FIG. 3B has entered the cushion 108 side with respect to the occupant 132 of FIG.
  • the occupant 132 moves forward of the vehicle due to inertia.
  • the occupant 132 moves in a trajectory that causes the upper body to bend forward about the waist E5.
  • FIG. 4 is an enlarged view of the cushion 108 and the occupant 132 of FIG.
  • the rear end portion 113 of the main bag 112 is inclined forward of the vehicle as viewed from the vehicle width direction.
  • a virtual line L2 obtained by virtually extending the rear end portion 113 of the main bag 112 with respect to the vertical line L1 is inclined forward toward the vehicle as it goes upward.
  • the main bag 112 is located in front of the passenger seat 104, and in many cases such as when a vehicle collides, the head E1, shoulder E3, chest E4, etc. of the occupant 132 are mainly brought into contact and restrained.
  • the injury value tends to increase with respect to the load in the sliding direction (the direction of raising the face). Therefore, in the present embodiment, the rear end portion 113 of the main bag 112 is inclined upward in the forward direction of the vehicle to suppress the load in the direction in which the head E1 slides and the associated injury value.
  • the inflated and deployed main bag 112 is in contact with the windshield 116 and the upper surface portion 106 of the instrument panel 102.
  • the occupant 132 can be restrained in a stable posture even when the occupant 132 enters.
  • the center bag 114 protrudes behind the main bag 112 (right side in FIG. 3B).
  • the rear end portion 160 of the center bag 114 when viewed from the vehicle width direction, is inclined rearward of the vehicle.
  • an imaginary line L3 obtained by extending the rear end portion 160 of the center bag 114 is inclined backward with respect to the vehicle as it goes upward with respect to the vertical line L1.
  • the rear end portion 160 of the center bag 114 restrains the left shoulder E3a of the occupant 132.
  • the occupant 132 is restrained by the seat belt 136 from the right shoulder E3b outside the vehicle to the flank inside the vehicle, but the left shoulder E3a is not restrained by the seat belt 136. Therefore, in an oblique collision, the occupant may head toward the front of the vehicle with a behavior such that the upper body is twisted with the left shoulder E3a being in front of the vehicle. In that case, the occupant 132 contacts the center bag 114 from the side head E1a, the rear end portion 160 of the inclined center bag 114 restrains the left shoulder E3a from the front and the upper side, and the right shoulder E3b is restrained by the main bag 112. to bound.
  • the angular velocity of rotation of the head E1 can be reduced, and the torsion occurring in the upper body can be offset, and the injury value of the occupant 132 can be further suppressed.
  • FIG. 3C is a diagram illustrating a state where the occupant 132 of FIG. 3B has further entered the cushion 108 side.
  • the head E ⁇ b> 1 of the occupant 132 is guided into the slit 128 while the side head E ⁇ b> 1 a is in contact with the center bag 114, and is restrained by the slit 128.
  • the left shoulder E3a of the occupant 132 is restrained from the front by the rear end portion 160 of the center bag 114. This cancels out the upper body twist.
  • FIG. 5 is a diagram illustrating the process in which the cushion 108 of FIG. 3 restrains the occupant 132 as viewed from above.
  • FIGS. 5A to 5C corresponds to each of FIGS. 3A to 3C.
  • the process in which the cushion 108 restrains the occupant 132 will be described with reference to FIGS. 5 (a) to 5 (c).
  • FIG. 5A it is assumed that an occupant 132 of the passenger seat 104 is seated while wearing a seat belt 136.
  • an operation signal is transmitted from a sensor (not shown) to the airbag device 100, and the cushion 108 is inflated and deployed as shown in FIG. 5B.
  • the occupant 132 moves obliquely forward on the inside of the vehicle.
  • the center bag 114 projects rearward from the main bag 112, and the head E1 of the occupant 132 contacts the side surface 162 of the center bag 114 from the side head E1a.
  • FIG. 5C is a view in which the occupant 132 of FIG. 5B further enters the cushion 108 side.
  • the head E1 of the occupant 132 that moves diagonally forward contacts the main bag 112 that is present in front of the passenger seat 104 the head E1 has a rotational force (arrow) clockwise around the neck E2 as viewed from above.
  • the rotation 140) illustrated in FIG. Therefore, in the present embodiment, a center bag 114 that protrudes rearward of the main bag 112 is provided on the inner side of the main bag 112, and a slit 128 is provided between the main bag 112 and the center bag 114.
  • the head E1 of the occupant 132 moving obliquely forward on the inside of the vehicle is restrained so as to enter the slit 128 while the side head E1a is in contact with the center bag 114.
  • the center bag 114 can actively restrain the side head E1a to the back head E1b to reduce or cancel the rotation 140 generated in the head E1.
  • the angular velocity of the rotation 140 of the head E1 of the occupant 132 can be reduced, and the injury value of the head E1 accompanying the rotation 140 can be suppressed.
  • the rear end portion 160 of the center bag 114 restrains the left shoulder E3a of the occupant 132. Since the left shoulder E3a of the occupant 132 is not restrained by the seat belt 136, in an oblique collision, the occupant may move toward the front of the vehicle with the left shoulder E3a being the front of the vehicle and the upper body being twisted. In that case, the rear end portion 160 of the center bag 114 restrains the left shoulder E3a from the front and the upper side, and then restrains the right shoulder E3b by the main bag 112.
  • the angular velocity of rotation of the head E1 can be reduced, and the torsion occurring in the upper body can be offset, and the injury value of the occupant 132 can be further suppressed.
  • the main bag 112 is inflated so as to be sandwiched between the instrument panel 102 and the windshield 116, and the posture is stable. Since the center bag 114 is supported by the main bag 112 via the tether belt 122, the center bag 114 is prevented from being separated from the main bag 112.
  • the first connection portion 124 of the tether belt 122 is provided on the upper portion 142 of the center bag 114 on the vehicle rear side.
  • the second connection portion 126 of the tether belt 122 is a vehicle inner side portion of the upper portion 144 of the main bag 112 and is provided in front of the vehicle with respect to the first connection portion 124.
  • the center bag 114 is in a state in which the upper rear side is pulled forward by the tether belt 122 and the head E1 can be efficiently restrained in a stable posture.
  • the length of the tether belt 122 is set to a length that makes tension when the main bag 112 and the center bag 114 are inflated and deployed, and the first connection portion 124 and the second connection portion 126 move away from each other. With the tensioned tether belt 122, even if the head E1 of the heavy occupant 132 comes into contact with the center bag 114 from the outside of the vehicle, the center bag 114 does not leave the main bag 112 so much and the slit 128 is kept narrow. E1 can be restrained.
  • the position where the second connection portion 126 is provided can be changed as appropriate.
  • the second connection portion 126 can be provided at the vehicle width direction center portion or the vehicle outer side portion of the upper portion 144 of the main bag 112.
  • the entire tether belt 122 is compared with the case where the second connection portion 126 is provided in the vehicle outer portion of the main bag 112 or the like. The length is short and the tether belt 122 is easily strained.
  • the length of the tether belt 122 can be changed by changing the position of the second connection portion 126, and the tension of the tether belt 122, the reaction force applied to the head E1 of the occupant 132 via the center bag 114, and the like can be changed as appropriate. It is also possible.
  • the contact between the occupant 132 and the cushion 108 starts when the temporal region E1a contacts the center bag 114.
  • contact between the occupant 132 and the cushion 108 is various, for example, the head E1 contacts the center bag 114 and the main bag 112 simultaneously, or the head E1 contacts the main bag 112 first. Further, the head E1 may contact the main bag 112 or the like after the shoulder E3 (see FIG. 3B or the like) or the chest E4 contacts the main bag 112 or the like.
  • the head E1 of the occupant 132 can be guided into the slit 128 and effectively restrained. It is.
  • FIG. 5B illustrates a clockwise rotation 140 as an example of the rotation that occurs in the head E1.
  • the head E1 may rotate counterclockwise around the neck as viewed from above.
  • the cushion 108 of the present embodiment the slit 128 can be used to reduce or cancel the counterclockwise rotation, and the angular velocity of the head E1 can be reduced. . That is, the airbag device 100 of the present embodiment can obtain the same effect with respect to both clockwise and counterclockwise rotations that occur in the head E1.
  • FIG. 6 is a diagram illustrating a process in which the cushion 108 of FIG. 3 restrains the occupant 132 as viewed from the front of the vehicle.
  • FIG. 6A it is assumed that the passenger 132 of the passenger seat 104 is seated while wearing the seat belt 136.
  • the main bag 112 is inflated and deployed in front of the occupant 132 as shown in FIG. 6B, and the center bag 114 is located on the inner side of the occupant 132 (right side in FIG. 6B). It expands and expands forward.
  • the occupant 132 that has moved obliquely forward from the seating position to the inside of the vehicle brings the side head E1a into contact with the center bag 114.
  • the left shoulder E3a that is not restrained by the seat belt 136 is restrained by the rear end portion 160 (see FIG. 3B) of the center bag 114.
  • the head E ⁇ b> 1 enters the slit 128 toward the front of the vehicle while being guided by the center bag 114, and is restrained by the slit 128.
  • FIG. 7 is a schematic diagram of the cushion 108 in FIG.
  • the upper body of the occupant 132 moves so as to rotate mainly around the waist E5 when the vehicle is impacted.
  • the head E1 of the occupant 132 draws a locus 156 that moves downward from the seating position in addition to moving forward from the vehicle.
  • the depth of the slit 128 is considered.
  • FIG. 7 illustrates a connecting portion 158 between the center bag 114 and the main bag 112.
  • This connecting portion 158 is also a portion constituting the bottom of the slit 128 and determines the depth of the slit 128.
  • the connecting portion 158 is provided by sewing, the center bag 114 and the main bag 112 being connected in shape, or the like.
  • the slit 128 is set so that the head E ⁇ b> 1 of the occupant 132 does not contact the connection portion 158.
  • the connection portion 158 is provided so as to avoid the locus 156 of the head E1 resulting therefrom. According to this configuration, the head E1 does not hit the connection portion 158, and the cushion 108 in consideration of safety can be realized.
  • the slit 128 is provided at a location where the head E1 of the occupant 132 can come into contact, and the main bag 112 and the center bag 114 are integrated below the slit 128.
  • the portion where the main bag 112 and the center bag 114 are integrated can suitably restrain the shoulder E3, the chest E4, and the like of the occupant 132, for example.
  • the center bag 114 can suitably restrain the head E1 of the occupant 132, particularly the side head E1a.
  • the center bag 114 also constrains to the slightly rear side of the center of gravity of the head E1 from the side head E1a of the occupant 132 toward the back head E1b. Then, the restraint of the head E1 is completed by the slit 128 between the main bag 112 and the center bag 114.
  • the rear end portion 160 of the center bag 114 restrains the left shoulder E3a of the occupant 132 from the front and above. According to these configurations, it is possible to suppress the rotation 140 and torsion of the upper body that may occur in the head E ⁇ b> 1 of the occupant 132, and greatly reduce the injury value of the occupant 132.
  • FIG. 8 is a diagram illustrating a modification of the center bag 114 illustrated in FIG.
  • the center bags 200 and 220 of the modified example illustrated in FIGS. 8A and 8B are different in configuration from the center bag 114 of FIG. 7 in the shapes of the rear end portions 202 and 222, respectively.
  • the description is abbreviate
  • the rear end portion 202 of the center bag 200 which is the first modification of FIG. 8A, draws a curve that protrudes rearward of the vehicle (right side in FIG. 8A) when viewed from the side of the vehicle. Inclined. Since the curved rear end portion 202 protrudes in a curved manner, the left shoulder portion E3a of the occupant 132 can be more easily contacted, and the left shoulder portion E3a can be preferably restrained.
  • the rear end portion 222 of the center bag 220 of the second modified example in FIG. 8B is inclined with a curve that is recessed toward the front of the vehicle (left side in FIG. 8B). is doing. Since the rear end portion 222 is concave in a curve, the rear end portion 222 can come into contact with the upper end of the left shoulder E3a of the occupant 132. Therefore, the left shoulder E3a can be preferably restrained also by the rear end portion 222.
  • the cushion 108 for example, a case where the main bag and the center bag are independent bag-shaped portions, each including a separate housing and inflator is also conceivable.
  • the main bag and the center bag which are independent from each other may be provided with separate inflators and stored in the same single housing. Even with the cushions configured as described above, it is possible to achieve the same function as the cushion 108 and the like described above by causing the center bag to protrude rearward of the main bag and further providing the slit 128 and the like.
  • the present invention can be used in an airbag device for a passenger seat that restrains a passenger in the passenger seat of the vehicle from the front of the vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

Le problème selon l'invention consiste à fournir un appareil du type coussin gonflable permettant de retenir un passager dans une position stable même lors d'une collision oblique et de réduire au minimum le niveau de blessure du passager. La solution selon l'invention porte sur un appareil du type coussin gonflable (100) qui retient un passager (132) assis sur un siège passager (104) d'un véhicule. L'appareil du type coussin gonflable (100) comprend : un sac principal en forme de sac (112) qui se dilate et se déploie devant le siège passager; un sac central en forme de sac (114) qui se dilate et se déploie sur le côté intérieur du sac principal (112) dans le sens de la largeur du véhicule; et une fente (128) au niveau de laquelle le sac principal (112) et le sac central (114) sont séparés sur le côté vers l'arrière du véhicule. Une partie d'extrémité arrière (160) du sac central (114) s'incline de manière à faire progressivement saillie vers l'arrière du véhicule au fur et à mesure qu'elle s'étend vers le haut, ladite partie d'extrémité arrière (160) faisant saillie davantage vers l'arrière du véhicule qu'au moins le sac principal (112).
PCT/JP2015/070229 2014-08-04 2015-07-15 Appareil du type coussin gonflable WO2016021381A1 (fr)

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JP2016540137A JP6263627B2 (ja) 2014-08-04 2015-07-15 エアバッグ装置
US15/501,126 US10358106B2 (en) 2014-08-04 2015-07-15 Airbag apparatus

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JP2014-158892 2014-08-04

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